<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表单验证提示</title>
</head>
<body>
    <div id="app"></div>
</body>
<script src="/day1/js/vue.js"> </script>
<script>
    let app = new Vue({
        el: '#app',
        data: {
            u
        },
        methods: {
         
        }
    });
</script>
</html>